Which expression is equivalent to 8f - 5+ f?

-5+9f

8f+f-5

We cannot add variables and constants, so we only add the f's:

-5+9f is the answer

Hope this helps

~Just a joyful teen

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

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